水下基础防冲刷袋装混凝土配制技术  

Preparation technology of anti-scouring bagged concrete for underwater foundation

作　　者：王成启[1] 杨磊 WANG Cheng-qi;YANG Lei(CCCC Shanghai Third Harbor Engineering Science and Technology Research Institute Co.,Ltd.,Shanghai 200032,China;No.2 Engineering Co.,Ltd.of CCCC Third Harbor Engineering Bureau Co.,Ltd.,Shanghai 200122,China)

机构地区：[1]中交上海三航科学研究院有限公司,上海200032 [2]中交三航局第二工程有限公司,上海200122

出　　处：《水运工程》2021年第11期21-25,共5页Port & Waterway Engineering

摘　　要：针对水下基础防冲刷技术,开展袋装混凝土配制技术研究。研究结果表明,水灰比对试模混凝土的抗压强度产生显著影响:当水灰比≤0.83时,混凝土抗压强度>13.0 MPa;当水灰比≤0.66时,混凝土抗压强度>15.0 MPa,当水灰比≤0.54时,混凝土抗压强度>20.0 MPa;砂率对试模混凝土的抗压强度也产生一定影响,砂率宜为41%~43%;试模混凝土抗压强度与袋装混凝土芯样抗压强度具有良好的相关性。根据试验研究结果,提出袋装混凝土配合比参数和设计方法,可为水下基础袋装混凝土配合比设计提供技术指导。Aiming at the anti-scouring technology of underwater foundation,we carry out a research on the preparation technology of bagged concrete.The results show that the water cement ratio has a significant impact on the compressive strength of the concrete.When the water cement ratio is not more than 0.83,the compressive strength of the concrete is more than 13.0 MPa;when the water cement ratio is not more than 0.66,the compressive strength of the concrete is more than 15.0 MPa;when the water cement ratio is not more than 0.54,the compressive strength of the concrete is more than 20.0 MPa.The sand ratio also has some impact on the compressive strength of the concrete,and the sand ratio shall be 41%~43%.The compressive strength of test mold concrete has a good correlation with the compressive strength of bagged concrete core sample.According to the experimental results,we propose the mix proportion parameters and design method of bagged concrete,which provides a technical guidance for the mix proportion design of bagged concrete for underwater foundation.

关 键 词：水下基础 防冲刷 袋装混凝土 配制技术 配合比 

分 类 号：TU528[建筑科学—建筑技术科学] U65[交通运输工程—港口、海岸及近海工程]